Global Volcanism Program | Image GVP-03359
Riverside Geyser in the Upper Geyser Basin is the most regular of Yellowstone's geysers. About every six hours it ejects a 25-m-high inclined jet from a small vent hole on the east bank of the Firehole River 2 km downstream from Old Faithful.
Photo by Lee Siebert, 1968 (Smithsonian Institution).
This image is made available under the Public Domain Dedication CC0 license, but proper attribution is appreciated.
Galleries: Geothermal Features